Improvement in machines for turning wheels



J. W. HILL.

Machines for Turning Wheels.

,912. Patented September16,1873.

I am

III II I Q WW UNITED STATES PATENT OFFICE JOHN W. HILL, OF DAYTON, OHIO,ASSIGNOR TO HIMSELF AND CHRIS- TIAN HEROHELRODE.

IMPROVEMENT IN MACHINES FOR TURNING WHEELS.

Specification forming part of Letters Patent No. 142,9 [2, datedSeptember 16, 1873 application filed August 20, 1873.

To all whom it may coneerm,

Be it known that I, JOHN W. HILL, ofDayton, in the county of Montgomeryand State of Ohio, have inventedcertain new and useful Improvements inBoring-Mills; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it pertains to make and use it, referencebeing had to the accompanying drawings which form part of thisspecification.

The boring and turning mills now generally employed for turning turbinewater-wheels compel the machinist to chuck the wheel on. the face-plateof the mill and. turn it to fit the case or curb before it is keyed onits shaft.

4 By this method it is next to impossible to get the united wheel andshaft concentric with each other, so that the wheel can turn true in itscurb. This is, however, of great practical importance, and my inventionis designed to supply the means of turning a turbine waterwheel after ithas been keyed on its shaft, and in such a manner that it must ofnecessity be turned concentric therewith. To this end my improvementconsists in the employment, in combination with a center attached to theface-plate of the boring-mill, of an adjustable bearing, fastened to therail on which the tool-stocks travel, plumb above the center, so thatthe united wheel and shaft can be read ily centered on the mill bycentering the shaft on the face-plate center and supporting it in thebearing overhead. In consequence of the useof a bearing for the supportof the upper end of the shaft the length of the latter can offer noimpediment to its proper mounting.

Figure 1 of the annexed drawings is a sectional front elevation of aboring and turning mill with my improvement attached. Fig. 2

The face-plate A is mounted on the bedplate B of the boring-mill in theusual manner, and driven by belt or gearing. The rail 0, on which thetool-stocks travel, is arranged to slide vertically on the guides D andD of the frame, which are connected at the top by the stringer E. Theface-plate has a central aperture in which a thimble or bush, F, isinserted to receive a suitable center, G. A bearing, H, is fixed on therail 0 plumb above this center, by means of L-shaped irons I, which,hooking over the rail, are screwed to the base of the bearing by bolts12, in the manner clearly shown in Fig. 2. The journalboxes 71. and k ofthe bearing are, after adjustment by the screw h? and the insertion ofthe wheel-shaft, secured by the cap lb The wheel K, having been bored,is keyed on its shaft L, previously turned, and the united wheel andshaft are centered. on the mill by setting the lower centered end of theshaft on the center G of the face-plate, and placing the upper end ofthe shaft laterally in the bearin g H. The wheel-shaft thus servesvirtually as a mandrel, and. the wheel must of necessity be turnedconcentric with it.

Various sizes of journal-boxes will be provided for each bearing to fitshafts of di'lferent diameters.

The wheel and shaft, after having been centered on the mill, can be madefast to the face plate, and driven by any suitable dog.

What I claim as my invention, and desire to secure by Letters Patent,is-

The face-plate A and rail (3 of aboring and turning mill, in combinationwith a center, G, and bearing H, substantially as and for the purposespecified.

In testimony that I claim the foregoing I have hereunto set my hand this11th day of August, 1873.

JOHN W. HILL.

W'itnesses:

G. HERGHELRODE, O. P. RUssELL.

